How To Add A Stitch In Knitting: Master Essential Increase Techniques Step-by-Step

Learning how to add a stitch in knitting—known technically as increasing—is the foundational skill required to shape garments, contour sleeves, craft shawls, and work intricate lace patterns. By manipulating working yarn or existing loops through methods like Make One Left (M1L), Make One Right (M1R), Knit Front and Back (KFB), and Yarn Overs (YO), you can expand your fabric smoothly without altering tension or gauge stability. Mastering these core increase techniques allows you to control the exact direction, texture, and structural density of your knitted project.

Essential Gear and Master Concepts Before Increasing

Before executing any increase method, you must understand how adding stitches affects your fabric’s overall structural geometry and stitch count. Increasing expands the width of your work, meaning yarn tension and stitch placement directly influence whether the addition appears invisible or decorative. Practicing these techniques on a tension swatch using smooth yarn will help you master stitch anatomy before applying them to a full project.

Materials & Tools Checklist

• Essential Gear: Pair of knitting needles matching your yarn’s recommended gauge (straight or circular), smooth medium-weight yarn (Worsted or DK weight, preferably 100% wool or acrylic for clear stitch visibility).
• Auxiliary Notions: Locking stitch markers (to track increase locations), a row counter, a tapestry needle for weaving ends, and a sliding gauge ruler.
• Prerequisite Skills: Solid mastery of the knit stitch (K), purl stitch (P), slide/slip stitches, identifying stitch legs (leading vs. trailing), and picking up the horizontal strand (running strand) between stitches.
• Resource Estimates: 20 to 30 minutes of dedicated swatch practice; minimal financial investment using leftover scrap yarn ($0–$10).

Master Protocols: How to Execute Primary Knitting Increases

Knitting increases fall into three main functional categories: invisible strands-based increases (M1 series), bar-based stitch increases (KFB), and decorative openwork increases (Yarn Overs). Follow these step-by-step technical workflows to execute each method cleanly.

Step 1: Execute Seamless Mirrored Increases (M1R and M1L)

Make One Right (M1R) and Make One Left (M1L) are lifted increases that use the horizontal strand of yarn—called the running strand—running between the stitch just worked and the next stitch on the left needle. Crucially, the strand must be twisted as it is knitted to close the loop and prevent unsightly holes.

1. Make One Right (M1R): Work to the designated increase point. Take your left needle tip and insert it from back to front underneath the running strand between the two stitches, lifting it onto the left needle. The strand now sits on your left needle with a leading front leg. Insert your right needle into the front loop of this lifted strand (from left to right) and knit it. Twisting this loop clockwise closes the hole and creates a stitch that slants visually to the right.

2. Make One Left (M1L): Work to the designated increase point. Take your left needle tip and insert it from front to back underneath the running strand between the two stitches, lifting it onto the left needle. Insert your right needle into the back loop of this lifted strand (from right to left) and knit it. Twisting this loop counter-clockwise closes the hole and creates a stitch that slants visually to the left.

Pro-Tip: Remember the mnemonic: "I left through the front door" (M1L = insert left needle from Front to back) and "I came right back" (M1R = insert left needle from Back to front).

Step 2: Create a Sturdy Bar Increase (Knit Front and Back - KFB)

Knit Front and Back (KFB) is a single-stitch increase worked directly into an existing stitch rather than the strand between stitches. It creates a subtle horizontal ridge (or "bar") that resembles a purl bump, making it ideal for garter stitch or textured stitch patterns.

1. Insert the right needle tip into the front loop of the next stitch on your left needle from left to right, as if to work a standard knit stitch.
2. Wrap the working yarn counter-clockwise around the right needle and pull a new loop through to the front. Do not drop the original stitch off the left needle.
3. Pivot your right needle behind the left needle and insert the point from right to left into the back loop of that same original stitch.
4. Wrap the working yarn counter-clockwise around the right needle and pull this second loop through to the back.
5. Carefully drop the original stitch off the left needle. You now have two distinct stitches on your right needle generated from a single base stitch.

Warning: Avoid using KFB along smooth Stockinette stitch raglan lines where an invisible join is required, as the remaining horizontal bar will disrupt the clean vertical column of knit stitches.

Step 3: Work Openwork and Lace Increases (Yarn Over - YO)

A Yarn Over (YO) is an intentional increase that creates a decorative eyelet hole in the fabric while adding a new stitch to your overall count. It uses no pre-existing stitches or running strands; instead, it wraps the working strand directly around the right needle shaft.

1. Yarn Over Between Two Knit Stitches: Bring the working yarn from the back of the work to the front between the two needle tips. Bring the yarn up and over the top of the right needle to the back. Work the next knit stitch normally.
2. Yarn Over Between a Knit and a Purl Stitch: Bring the working yarn from the back to the front between the needles, wrap it up and over the right needle to the back, then bring it under the right needle to the front again to position it for the purl stitch.
3. Maintain uniform tension as you wrap the yarn over the full barrel of the needle—do not let the yarn slide down onto the narrower tip, which can cause inconsistent eyelet sizing across your project rows.

Step 4: Add Multiple Stitches at Edges (Cable Cast-On Method)

When a pattern demands adding several stitches at once at the beginning or end of a row (such as for sweater underarms, necklines, or button bands), single-stitch increases inside the row are insufficient. Use the Cable Cast-On method for structural strength.

1. Turn your work so the working yarn is positioned at the edge of the fabric on your left needle.
2. Insert your right needle tip between the first two stitches on the left needle (not into the stitch loops themselves).
3. Wrap the working yarn counter-clockwise around the right needle and pull the new loop through to the front.
4. Draw the new loop out slightly, twist it counter-clockwise by 180 degrees, and slide it onto the tip of the left needle.
5. Repeat this procedure between the newly cast-on stitch and the preceding stitch until you reach your required added stitch count.

Comparative Breakdown of Knitting Increase Methods

The table below outlines technical metrics, visual slants, structural densities, and optimal usage cases for the primary knitting increase techniques.

Common Increasing Errors and Professional Field Fixes

Even experienced knitters encounter tension discrepancies or unwanted gaps when adding stitches. Use these troubleshooting remedies to correct common errors quickly.

• Scenario 1: Large open holes appearing under M1R or M1L increases.

  
  
  
  • Root Cause: The lifted running strand was knitted straight without twisting the loop, leaving an open hole similar to a yarn over.
  • Actionable Fix: When working M1R, make sure you enter the front leg from left to right to force a clockwise twist. For M1L, enter the back loop from right to left to force a counter-clockwise twist. If discovered on the next row, drop the untwisted stitch down one row, twist the loop manually with a crochet hook, and rebuild it.

• Scenario 2: Asymmetrical shaping along mirrored raglan sleeve lines.

  
  
  
  • Root Cause: Using the same increase method (e.g., M1R on both sides) instead of pairing left-leaning and right-leaning increases.
  • Actionable Fix: Always pair your increases symmetrically across raglan lines or garment borders. Position M1R on the right side of a marker (slanting rightward into the fabric body) and M1L on the left side of a marker (slanting leftward).

• Scenario 3: Severe needle tightness and distortion when executing KFB.

  
  
  
  • Root Cause: Pulling the working yarn too tightly after making the first knit stitch, choking the back loop on the needle barrel.
  • Actionable Fix: Execute the first knit stitch into the front loop, but do not pull the working yarn taut. Slide the stitch slightly away from the narrow tapered point onto the main barrel of the needle before pivoting into the back loop.

• Scenario 4: Accidental extra stitches appearing mid-row without pattern instructions.

  
  
  
  • Root Cause: Unintentionally bringing the working yarn over the needle instead of under it when transitioning between knit and purl stitches, creating an accidental Yarn Over.
  • Actionable Fix: Count your stitches at the end of every row section. If an unscripted Yarn Over loop appears on your next row, simply drop it off the needle tip without knitting it—the surrounding tension will redistribute naturally across neighboring stitches.

Frequently Asked Questions

What is the easiest way to add a stitch in knitting for beginners?

The Knit Front and Back (KFB) method is generally the easiest for beginners because it is worked directly into an existing stitch rather than requiring you to pick up tiny strands of yarn between stitches. However, keep in mind that KFB creates a small visible bar across the base of the new stitch.

How do I add a single stitch at the very end of a row?

To add a single stitch at the end of a row, use either the Backward Loop Cast-On or work a Knit Front and Back (KFB) into the final stitch of that row. If structural rigidity is required for seam sewing, KFB in the second-to-last stitch is ideal to preserve a clean edge stitch.

Can I substitute M1L and M1R for KFB in a knitting pattern?

Yes, you can substitute M1 increases for KFB, but you must account for stitch placement and visual texture. Because KFB consumes a base stitch while M1 creates a new stitch between two existing ones, substituting M1 requires working to the space between stitches where the KFB would have occurred.

What is the difference between M1L and M1R?

The key difference lies in the direction the finished stitch slants. M1R (Make One Right) leans toward the right side of the fabric, while M1L (Make One Left) leans toward the left. Pattern designers pair them on opposing edges of garments to create clean, symmetrical shaping curves.

Does adding stitches in knitting change my gauge?

Adding stitches increases the total width of your knitted fabric and alters the overall stitch count, but it does not change your underlying gauge (the number of stitches and rows per inch). Maintain consistent working yarn tension during increases so your base gauge remains uniform throughout the project.

Advance Your Fiber Craft Mastery

Mastering increase techniques is your gateway to shaping sophisticated knitted garments, custom accessories, and complex lace designs. Explore our library of technical knitting guides to elevate your gauge control, seamless garment construction, and stitch pattern repertoire today.